It's the end of the month, and that means that a lot of coupons will not be available starting September 1st. That doesn't mean that they expire, though. So, get your coupons printed before they no longer exist. Here are some good websites that have printable coupons. I'm sure there are more, and I would gladly accept comments if I missed a good one.
Kroger Coupons: sign in or sign up for a Kroger Plus Card to have coupons downloaded right to your card
Cellfire: another one where you can download coupons to a frequent shopper card (like your Kroger card)